Getting Super Confused with User associations in Rails -
i teaching myself rails , project working on auction site. user can either seller or bidder. when tried associations, can seller's information show not bidder's. have , still can't figure out. appreciated.
https://github.com/sgrzona/ebay
auction.rb class auction < activerecord::base belongs_to :seller, class_name: 'user', foreign_key: :user_id has_many :auction_bids belongs_to :bidder, class_name: 'user' auction_bid.rb class auctionbid < activerecord::base belongs_to :bidder, :class_name => 'user', :foreign_key => 'bidder_id' has_one :seller, :class_name => 'user' belongs_to :auction user.rb class user < activerecord::base devise :database_authenticatable, :registerable, :recoverable, :rememberable, :trackable, :validatable has_many :auctions has_many :auction_bids auction_bids_controller.rb
class auctionbidscontroller < applicationcontroller before_filter :authenticate_user!, only: [:new, :edit, :update, :create, :destroy] def @auction_bids = current_user.auction_bids.order("expires_at asc") end def index @auction = auction.find(params[:auction_id]) @auction_bids = @auction.auction_bids.order("bid desc") end def new @auction = auction.find(params[:auction_id]) @auction_bid = auctionbid.new end def show @auction_bid = auctionbid.find(params[:id]) @auction = @auction_bid.auction end def create @auction = auction.find(params[:auction_id]) @auction_bid = @auction.auction_bids.new(auction_bid_params) rails.logger.info "\n\n*** #{@auction_bid.inspect}\n" if not_users_own_auction? if @auction_bid.save redirect_to @auction, :notice => "you current high bidder" else render :new end else flash[:error] = "you cannot bid on won auction." redirect_to @auction end end private def auction_bid_params params.require(:auction_bid).permit(:bid) end def not_users_own_auction? @auction.seller != current_user end end auctions_controller.rb
class auctionscontroller < applicationcontroller before_filter :authenticate_user!, only: [:new, :edit, :update, :create, :destroy, :my] before_action :set_auction, only: [:show, :edit, :update, :destroy] before_action :correct_user, only: [:edit, :update, :destroy ] # /auctions def index @auctions = auction.all end def @auctions = current_user.auctions.order("expires_at asc") @auction_bids = current_user.auction_bids.order("expires_at asc") end # /auctions/1 def show @auction = auction.find(params[:id]) end # /auctions/new def new @auction = current_user.auctions.build end # post /auctions def create @auction = current_user.auctions.build(auction_params) if @auction.save redirect_to @auction, notice: 'auction created.' else render action: "new" end end def update if @auction.update(auction_params) redirect_to @auction, notice: 'auction updated.' else render action: 'edit' end end # delete /auctions/1 def destroy if @auction.destroy redirect_to auctions_url, notice: 'auction destroyed.' else redirect_to auctions_url, error: 'auction not destroyed.' end end private # use callbacks share common setup or constraints between actions. def set_auction @auction = auction.find(params[:id]) end def correct_user if @auction.seller != current_user redirect_to auctions_path, error: "not authorized edit auction" end end # never trust parameters scary internet, allow white list through. def auction_params params.require(:auction).permit(:title, :description, :user_id, :image, :expires_at) end end
i think you're looking associations along lines of:
class auction < activerecord::base belongs_to :seller, class_name: 'user', foreign_key: :user_id has_many :auction_bids has_many :bidders, :through => :auction_bids auction_bid.rb class auctionbid < activerecord::base belongs_to :bidder, :class_name => 'user', :foreign_key => :bidder_id belongs_to :auction user.rb class user < activerecord::base devise :database_authenticatable, :registerable, :recoverable, :rememberable, :trackable, :validatable has_many :auctions , :through => :auction_bids has_many :auction_bids, :foreign_key => 'bidder_id' @auction.bidders collection proxy. http://apidock.com/rails/activerecord/associations/collectionproxy. rails returning set of bidder objects you have iterate on like:
@auction.bidders.each |bidder| puts bidder.to_s end or can like:
@auction.bidders.count ... number of bidders example.